Across
1
Corner point of a polygon
4
Mathematical rule or equation
5
Round shape with all points equidistant
8
Closed shape with straight sides
10
Single numeral from 0 to 9
Down
2
Difference between highest and lowest values
3
Number that divides evenly into another
6
Divisible by two
7
Line crossing from corner to corner
9
Longest side of a right triangle